Configuring the fieldbus
6.2 Communication via RS485
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
146
Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
The CU230P-2 HVAC uses the BIBBs listed below:
Table 6- 36 Overview of the BIBB used by CU230P-2 HVAC and associated services
Short designation
BIBB
Service
DS-RP-B
Data Sharing-ReadProperty-B
ReadProperty
DS-WP-B
Data Sharing-WriteProperty-B
WriteProperty
DM-DDB-B
Device Management-Dynamic Device
Binding-B
•
Who-Is
•
I-Am
DM-DOB-B
Device Management-Dynamic Object
Binding-B
•
Who-Has
•
I-Have
DM-DCC-B
Device Management-
DeviceCommunicationControl-B
DeviceCommunicationControl
DS-COV-B
Data Sharing-COV-B
•
SubscribeCOV,
•
ConfirmedCOVNotification,
•
UnConfirmedCOVNotification
The inverter can simultaneously process up to 32 SubscribeCOV services. These can all
refer to the same object instances - or different object instances.
SubscribeCOV is supported for binary value objects (BVxx) and for analog input objects (AI
xx).
Note
SubscribeCOV services are not retentive, i.e. when switching off, COVs, which have not
been executed, are lost and must be re-initiated when the CU restarts.
Table 6- 37 Code numbers of the object types supported in BACnet
Object type
Code number for BACnet object type
Device
8
Digital input
3
Digital output
4
Digital value
5
Analog input
0
Analog output
1
Analog value
2
Summary of Contents for SINAMICS G120 CU230P-2
Page 2: ......